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Diffstat (limited to 'storage/perfschema/table_replication_applier_status.cc')
| -rw-r--r-- | storage/perfschema/table_replication_applier_status.cc | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/storage/perfschema/table_replication_applier_status.cc b/storage/perfschema/table_replication_applier_status.cc new file mode 100644 index 00000000..053ed997 --- /dev/null +++ b/storage/perfschema/table_replication_applier_status.cc @@ -0,0 +1,228 @@ +/* + Copyright (c) 2013, 2022, Oracle and/or its affiliates. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License, version 2.0, + as published by the Free Software Foundation. + + This program is also distributed with certain software (including + but not limited to OpenSSL) that is licensed under separate terms, + as designated in a particular file or component or in included license + documentation. The authors of MySQL hereby grant you an additional + permission to link the program and your derivative works with the + separately licensed software that they have included with MySQL. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License, version 2.0, for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ + +/** + @file storage/perfschema/table_replication_applier_status.cc + Table replication_applier_status (implementation). +*/ + +//#define HAVE_REPLICATION + +#include "my_global.h" + +#ifdef HAVE_REPLICATION +#include "table_replication_applier_status.h" +#include "pfs_instr_class.h" +#include "pfs_instr.h" +#include "slave.h" +//#include "rpl_info.h" +#include "rpl_rli.h" +#include "rpl_mi.h" +#include "sql_parse.h" +//#include "rpl_msr.h" /*Multi source replication */ + +THR_LOCK table_replication_applier_status::m_table_lock; + +PFS_engine_table_share_state +table_replication_applier_status::m_share_state = { + false /* m_checked */ +}; + +PFS_engine_table_share +table_replication_applier_status::m_share= +{ + { C_STRING_WITH_LEN("replication_applier_status") }, + &pfs_readonly_acl, + table_replication_applier_status::create, + NULL, /* write_row */ + NULL, /* delete_all_rows */ + table_replication_applier_status::get_row_count, /* records */ + sizeof(pos_t), /* ref length */ + &m_table_lock, + { C_STRING_WITH_LEN("CREATE TABLE replication_applier_status(" + "CHANNEL_NAME VARCHAR(256) collate utf8_general_ci not null comment 'The replication channel name.'," + "SERVICE_STATE ENUM('ON','OFF') not null comment 'Shows ON when the replication channel''s applier threads are active or idle, OFF means that the applier threads are not active.'," + "REMAINING_DELAY INTEGER unsigned comment 'Seconds the replica needs to wait to reach the desired delay from master.'," + "COUNT_TRANSACTIONS_RETRIES BIGINT unsigned not null comment 'The number of retries that were made because the replication SQL thread failed to apply a transaction.')") }, + false, /* m_perpetual */ + false, /* m_optional */ + &m_share_state +}; + + +PFS_engine_table* table_replication_applier_status::create(void) +{ + return new table_replication_applier_status(); +} + +table_replication_applier_status::table_replication_applier_status() + : PFS_engine_table(&m_share, &m_pos), + m_row_exists(false), m_pos(0), m_next_pos(0) +{} + +table_replication_applier_status::~table_replication_applier_status() +{} + +void table_replication_applier_status::reset_position(void) +{ + m_pos.m_index= 0; + m_next_pos.m_index= 0; +} + +ha_rows table_replication_applier_status::get_row_count() +{ + return master_info_index->master_info_hash.records; +} + + +int table_replication_applier_status::rnd_next(void) +{ + Master_info *mi; + mysql_mutex_lock(&LOCK_active_mi); + + for (m_pos.set_at(&m_next_pos); + m_pos.m_index < master_info_index->master_info_hash.records; + m_pos.next()) + { + mi= (Master_info *)my_hash_element(&master_info_index->master_info_hash, m_pos.m_index); + + if (mi && mi->host[0]) + { + make_row(mi); + m_next_pos.set_after(&m_pos); + mysql_mutex_unlock(&LOCK_active_mi); + return 0; + } + } + + mysql_mutex_unlock(&LOCK_active_mi); + return HA_ERR_END_OF_FILE; +} + + +int table_replication_applier_status::rnd_pos(const void *pos) +{ + Master_info *mi=NULL; + int res= HA_ERR_RECORD_DELETED; + + set_position(pos); + + mysql_mutex_lock(&LOCK_active_mi); + + if ((mi= (Master_info *)my_hash_element(&master_info_index->master_info_hash, m_pos.m_index))) + { + make_row(mi); + res= 0; + } + + mysql_mutex_unlock(&LOCK_active_mi); + return res; +} + +void table_replication_applier_status::make_row(Master_info *mi) +{ + char *slave_sql_running_state= NULL; + + m_row_exists= false; + + DBUG_ASSERT(mi != NULL); + + m_row.channel_name_length= static_cast<uint>(mi->connection_name.length); + memcpy(m_row.channel_name, mi->connection_name.str, m_row.channel_name_length); + + mysql_mutex_lock(&mi->rli.run_lock); + + slave_sql_running_state= const_cast<char *> + (mi->rli.sql_driver_thd ? + mi->rli.sql_driver_thd->get_proc_info() : ""); + mysql_mutex_unlock(&mi->rli.run_lock); + + mysql_mutex_lock(&mi->data_lock); + mysql_mutex_lock(&mi->rli.data_lock); + + if (mi->rli.slave_running) + m_row.service_state= PS_RPL_YES; + else + m_row.service_state= PS_RPL_NO; + + m_row.remaining_delay= 0; + if (slave_sql_running_state == Relay_log_info::state_delaying_string) + { + time_t t= my_time(0), sql_delay_end= mi->rli.get_sql_delay_end(); + m_row.remaining_delay= (uint)(t < sql_delay_end ? + sql_delay_end - t : 0); + m_row.remaining_delay_is_set= true; + } + else + m_row.remaining_delay_is_set= false; + + m_row.count_transactions_retries= mi->rli.retried_trans; + + mysql_mutex_unlock(&mi->rli.data_lock); + mysql_mutex_unlock(&mi->data_lock); + + m_row_exists= true; +} + +int table_replication_applier_status::read_row_values(TABLE *table, + unsigned char *buf, + Field **fields, + bool read_all) +{ + Field *f; + + if (unlikely(! m_row_exists)) + return HA_ERR_RECORD_DELETED; + + assert(table->s->null_bytes == 1); + buf[0]= 0; + + for (; (f= *fields) ; fields++) + { + if (read_all || bitmap_is_set(table->read_set, f->field_index)) + { + switch(f->field_index) + { + case 0: /**channel_name*/ + set_field_varchar_utf8(f, m_row.channel_name, m_row.channel_name_length); + break; + case 1: /* service_state */ + set_field_enum(f, m_row.service_state); + break; + case 2: /* remaining_delay */ + if (m_row.remaining_delay_is_set) + set_field_ulong(f, m_row.remaining_delay); + else + f->set_null(); + break; + case 3: /* total number of times transactions were retried */ + set_field_ulonglong(f, m_row.count_transactions_retries); + break; + default: + assert(false); + } + } + } + return 0; +} +#endif |